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80
Learning in the Presence of Concept Drift and Hidden Contexts
 Machine Learning
, 1996
"... . Online learning in domains where the target concept depends on some hidden context poses serious problems. A changing context can induce changes in the target concepts, producing what is known as concept drift. We describe a family of learning algorithms that flexibly react to concept drift and c ..."
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Cited by 285 (1 self)
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and can take advantage of situations where contexts reappear. The general approach underlying all these algorithms consists of (1) keeping only a window of currently trusted examples and hypotheses; (2) storing concept descriptions and reusing them when a previous context reappears; and (3) controlling
Reappearance of Sequences with Different Number of Responses in Extinction and Variation Contexts
"... ABSTRACT The reappearance of a response previously extinguished when an alternative response no longer produces reinforcers is called resurgence. The effects of three variables on the reappearance of response sequences sequence probability (high and low), context of test (extinction and operant v ..."
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ABSTRACT The reappearance of a response previously extinguished when an alternative response no longer produces reinforcers is called resurgence. The effects of three variables on the reappearance of response sequences sequence probability (high and low), context of test (extinction and operant
Context tracker: Exploring supporters and distracters in unconstrained environments
 In IEEE Conference on Computer Vision and Pattern Recognition (CVPR
, 2011
"... Visual tracking in unconstrained environments is very challenging due to the existence of several sources of varieties such as changes in appearance, varying lighting conditions, cluttered background, and framecuts. A major factor causing tracking failure is the emergence of regions having similar ..."
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Cited by 48 (1 self)
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appearance as the target. It is even more challenging when the target leaves the field of view (FoV) leading the tracker to follow another similar object, and not reacquire the right target when it reappears. This paper presents a method to address this problem by exploiting the context onthefly in two
Design Patterns as Language Constructs
 Journal of ObjectOriented Programming
, 1998
"... Design patterns have proven to be very useful for the design of objectoriented systems. The power of design patterns stems from their ability to provide generic solutions to reappearing problems that can be specialised for particular situations. The implementation of design patterns, however, has r ..."
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Cited by 83 (5 self)
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Design patterns have proven to be very useful for the design of objectoriented systems. The power of design patterns stems from their ability to provide generic solutions to reappearing problems that can be specialised for particular situations. The implementation of design patterns, however, has
A Mobility Model for the Realistic Simulation of Social Context
"... The widespread use of usercarried devices with shortrange communication leads to networks characterized by high dynamics, sporadic connectivity, and strong partitioning. In such networks, connectivity between mobile nodes is strongly influenced by sociological aspects. To enable the evaluation of ..."
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of mobile applications which communicate in such networks, we require an appropriate mobility model. In this thesis, we have designed and implemented a mobility model which focuses on the simulation of social context. It takes an arbitrary weighted social network as input and reflects its structural
Sensor management for PRF selection in the trackbeforedetect context
 Proceedings of the IEEE Radar Conference
"... Abstract—We consider the pulse repetition frequency (PRF) selection problem for target tracking in the context of trackbeforedetect. Two sensor management criteria are proposed for solving the PRF selection problem. From the information theoretic class, a KullbackLeibler divergence based criterion ..."
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Cited by 4 (1 self)
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Abstract—We consider the pulse repetition frequency (PRF) selection problem for target tracking in the context of trackbeforedetect. Two sensor management criteria are proposed for solving the PRF selection problem. From the information theoretic class, a KullbackLeibler divergence based
Resurrecting My Revolution Using Social Link Neighborhood in Bringing Context to the Disappearing Web
"... Abstract. In previous work we reported that resources linked in tweets disappeared at the rate of 11 % in the first year followed by 7.3 % each year afterwards. We also found that in the first year 6.7%, and 14.6 % in each subsequent year, of the resources were archived in public web archives. In th ..."
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Cited by 3 (3 self)
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themselves (7.89%) as well as reappeared on the live web after being declared missing (6.54%). We have also tested the availability of the tweets themselves and found that 10.34 % have disappeared from the live web. To mitigate the loss of resources on the live web, we propose the use of a “tweet signature
On cyclically shifted strings
, 2008
"... If a string is cyclically shifted it will re–appear after a certain number of shifts, which will be called its order. We solve the problem of how many strings exist with a given order. This problem arises in the context of quantum mechanics of spin systems. ..."
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If a string is cyclically shifted it will re–appear after a certain number of shifts, which will be called its order. We solve the problem of how many strings exist with a given order. This problem arises in the context of quantum mechanics of spin systems.
KLEIN'S RIEMANN SURFACE OF GENUS 3 AND REGULAR IMBEDDINGS OF FINITE PROJECTIVE PLANES
"... The simple group F of order 168 which first occurred in the work of Galois around 1830 reappeared in two geometric contexts later in the 19th century. It arose in Felix Klein's investigation in 1877 of a Riemann surface of genus 3 which admits F as its group of conformal homeomorphisms. This is ..."
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Cited by 2 (0 self)
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The simple group F of order 168 which first occurred in the work of Galois around 1830 reappeared in two geometric contexts later in the 19th century. It arose in Felix Klein's investigation in 1877 of a Riemann surface of genus 3 which admits F as its group of conformal homeomorphisms
This is the edited text of two interviews
, 1923
"... Raoul Bott is one of the outstanding researchers in geometry and topology in recent times. He has made important contributions to topology, Lie group theory, foliations and characteristic classes, Ktheory and index theory, and many other areas of modern mathematics. One of his most spectacular succ ..."
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successes was the application of Morse theory to the study of the homotopy groups of Lie groups, which yielded the Bott periodicity theorem. This central result has reappeared in many other contexts, including several versions of Ktheory and noncommutative geometry.
Results 1  10
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